<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>class</title>
</head>
<body>
    <script>
        class people{
            name='gu';
            age=0;
            constructor(name,age){
                this.name=name;
                this.age=age;
            }
            speak(){
                console.log('说好了')
            }
        }
      var p= new people();
     console.log(p.name) ;
     console.log(p.age) ;
     console.log() ;
     p.speak()
    </script>
</body>
</html>